Add the SQLITE_CONFIG_MEMDB_MAXSIZE configuration option for configuring
the default maximum size of an in-memory database created using
sqlite3_deserialize(). This is necessary to make the interface reasonably
testable.

Add the SQLITE_CONFIG_MEMDB_MAXSIZE configuration option for configuring
the default maximum size of an in-memory database created using
sqlite3_deserialize(). This is necessary to make the interface reasonably
testable.
(check-in: cb72ee04 user: drh tags: trunk)